This is what I have found is working for me
Primary: Arc-12 Blitzer Its great at dealing with hords of voteless and doesn't need to be reloaded. Might be able to replace it with something like the sickle but mainly just needs to be a good weapon at clearing voteless and Overseers.
Secondary: Anything I've been playing with the CQC-30 Stun Baton or P-113 Verdict but honestly haven't really been using my secondary. Could probably replace this with whatever you prefer
Support: MLS-4X Commando I've also tried the Quasar Cannon but it's hard to top the commando. It has a pretty short cooldown time and can deal with harvesters. The first 2 shots will break the shield leaving the last 2 to take out the legs
Stratagems
A/ARC-3 Tesla Tower Honestly this thing seems really underrated. I've gotten 30+ kill streaks using it pretty regularly with it. I also haven't seen anyone else bring it. Since it was buffed in patch 01.001.104 it's been pretty strong
The last 2 stratagems depend on the type of mission. For regular missions you need something to break the shields of the ships on the ground. I like the eagle airstrike but most airstrikes and orbitals should work for this.
I also like to bring a backpack. My preference is the jump pack but I've heard other having success with the laser guard dog and shield generator pack. A jump pack works quite well if you get overwhelmed by voteless though and helps traverse the map quicker
For defense missions I would say it's pretty similar to bots. Bring a bunch of sentrys, maybe a Emancipator Exosuit. You also don't really need the commando or jump pack for this
Still playing around with different armors. Though armor with electrical conduit might actually have a place in the game now. Some of the illuminate attacks are arc and if you are running around with a Blitzer and Tesla Tower it can be useful
I've never really understood the argument against headphone jacks. I can still use Bluetooth headphones with my phone. I can also use wired headphones and aux cables on my phone. Why would you want less features